Air purifier



March 17, 1931. I Q SCHQBRQNE 1,796,405

I AIR PURIFIER "Filed March 2. 1929 3 Sheets-Sheet 1 //v4 /vme: CARL J. SCHOBQO/VE' @IZM;

March 17, 1931- c. J. sc bBRoNE AIR PURIFIER Filed March 2, 1929 3 Sheets-Sheet 3 Patented Mar. 17, 1931 UNITED STATES CARL J. SCHOIBRONE, OF CLEVELAND, OHIO AIR rummn Application flled March 2, 1929. Serial No. 343,877.

My invention pertains to an air purifier and more particularly to an apparatus involving some of the operating principles of my Patent No. 1,595,060 of August 3d, 1926, for Smoke treating apparatus and of my Patent No. 1,641,995 of September 13, 1927 for Smoke treating apparatus, though additionally adapted effectively to purify air which has become impregnated with noxious fumes or elements.

Besides the generally recognized smoke nuisance caused by many of our industrial plants,a large percent still pollute the atmosphere with fumes which are objectionable if not actually injurious alike to animal and plant life. A more specific object of my invention has been the design of apparatus which will be effective in operation for the intended purpose While avoiding complication and consequential excessive expense of manufacture.

It is to be realized that the scope of my in- 'vention comprehends many equivalent constructions. The showing of the drawings and the particular description are merely a specific exemplification of a plurality of mechanical embodiments and arrangements. Adverting to the drawings:

Figure 1 is an elevation of an air purifying apparatus embodying my invention.

Figure 2 is a top plan view of Figure 1.- Figure 3 is a somewhat enlarged view of a part of Figure 1 with a primary portion disclosed in longitudinally vertical section.

Figure 4 is a horizontal section on line 44 'of a portion of Figure 3.

Figure 5 is anend view on line 55 of Figures 3 and 4. 1

Figure 6 is a vertical section on line 66 of Figures 3 and 4.

Figure 7 is a vertical section on line 7 7 of Figures 3 and 4. Y v

Figure 8 is a. vertical section on line 8-8 of Figures 3 and 4. 45 Figure 9 is a vertical section on line 99 of Figure 3.

Figure 10 is a vertical sectlon on line 1010 of Figure 3. p Figure 11 is a still further enlarged end detail view showing the manner of mixing screen attachment and connection with a cen tral shaft.

Figure 12 is a relatively transverse view of Figure 11.

Extending from a foundation 1 are a pair of standards 2 and 3 which support a oylindrical mixing chamber composed of two longitudinal halves 4 and 5 and each having 1ongitudinal bordering flanges secured as exemplified by a series of bolts 6. Circular ends 7 and 8 are detachably secured in a similar manner by means of bolts 9.

Just beyond the left end of the mixing chamber is a standard 10, and in spaced relation beyond the opposite end of the mixing chamber are a pair of standards 11. The

- are to be conducted through a flue 18 which is divided into two branches 19 and 20 in front of the head 7, so that the branches diverge to clear the bearing 12 and communicate with the chamber through openings 21 and 22 in the head 7. Interiorly of the chamber the branches again converge at 23 and 24 respectively to communicate with a central and flared discharge outlet 25 which surrounds the shaft 15.

A series of screens are adjustably secured in the shaft 15 so as to rotate therewith in predetermined spaced relation. As illustrated in Figure 3 seven screens are disclosed, V

the four to the left being coarser with about inch mesh and the three to the right with finer inch mesh.

The manner in which the screens are mounted is shown in detail in Figures 11 and 12 and involves the employment of collars 26 slidablc along the shaft 15 and each adapted to be fixed in any chosen position by means of a set screw 27. One end of each collar detachably carries an annular disc 28 affixed with circumferentially arranged screws 29 and annular screens 30 are clamped to the disc 28 by means of circumferentially disposed rivets 31.

A pipe 32 connects with a source of spraying fluid (water or appropriately impregnated fluid according to requirements) and the supply may be controlled by means of a valve 33, the opposite sides of which is connected with a T 34, one outlet of which is connected by means of a union 35 with a pipe 36 entering the top of the chamber through an opening 37 over the discharge outlet 25. The pipe 36 terminates interiorly of the chamber as a C-shaped nozzle disposed as though turned clockwise through an arc of 90 and provided with perforations 38. The curved nozzle surrounds the discharge outlet 25 except for the dividing space 38a between their lower extremities and is adapted to spray toward the other end of the chamber as illustrated in Figure 3. A union 38b is shown in Figure 3 and is intended to facilitate detachment of the curved nozzle from the piping above it.

The other end of the T 34 communicates by means of a union 39 with another pipe 40 preferably composed of lead and entering the top of the chamber at about its longitudinal middle. The pipe 40 is likewise supplied with perforations 41 and extends across the chamber, being however fashioned at the center thereof with a bend 42 so as to pass halfway around the shaft 15.

It is to be observed in Figure 3 that three screens of the coarser mesh are interposed between the two spray nozzles 38 and 41 and that another sin le one of the coarser screens 30 is disposed (ilose to the opposite side 9f the nozzle 41. However, instead of permitting the spray from the nozzle 41 to travel freely past all of the interior margin of this particular screen 31,1 provide just ahead of that screen an annular baflie 43 provided with a marginal flange 44 which conforms to the interior surface of the cylinder except for a short gap or drain aperture 45 at the bottom, as clearly appears in both Figures 3 and 8. The margin of the other face of the baffle 43 (which is of annular cross-section) defines a central opening 46 of somewhat smaller diameter than that of the screens 30. By this arrangement the spray is compelled to pass through the particular screen 30 which is just ahead of the nozzle 41 with reference to its direction of spray toward the end 8 of the cylinder.

A plurality of mixing screens 47 p (3 as shown) of relatively finer mesh are selectively adjustable in spaced relation between the baflie 43 and the end 8 of the mixing chamber. It is to be understood that the manner of support and adjustable attachment of the finer screens 47 is the same as described and shown in Figures 11 and 12.

A storage tank 48 is suitably carried adjacent to the mixing chamber and in a relatively elevated position. The tank 48 is to contain a supply of a liquid chemical, selectable according to its intended function of auxiliary purification and it is provided with a valve controlled outlet 49 communicating through a pipe 50 with the top of the mixing chamber within which it is supplied with a discharge nozzle 51 located between two of the screens 47 and bent toward the outlet end of the cylinder.

Beyond that screen 47 which is nearest the end 8 of the mixing chamber the latter is provided with an upper outlet 52 leading to the stack 53. Projecting through the outlet 52 partially into the stack is a suction or draft pipe 54, shown in Figures 3 and 9, which is similarly bent halfway around the shaft 15 at 55 and has its lower end projected through an arcuate baffle 56. The baflle 56 has a closed connect-ion with the end 8 and slopes downwardly in a direction toward the opposite end of the mixing chamber where its free edge israised a slight distance from the bottom. The baffle 56 covers a drain outlet 57 with which the bottom of the suction or draft pipe 54,1'egisters. The outlet 57 communicates with a tank 58 intended to collect soot, foam or solid material, serving the same purpose as the corresponding tanks in my identified patents whereby only water which is free from sediment will escape through the'outlet 59 to the sewer.

The back of each of the seven screens carries a semicircular plate 60, and the plates are alternately arranged, that is, at the top and at the bottom of adjacent screens as appears to view in Figure 3. The object of these plates is to bafiie the gases to prevent a direct horizontal passage straight through the purifier thereby assuring a better intermingling of the gases with the water sprays by effecting a more complete absorption of the gases by the water.

I claim:

1. In an air purifier, a mixing chamber, a shaft mounted for rotation therein, a duplex inlet conduit divided at its place of entry to said chamber and unified outside and concentrically around said shaft inside of said chamber and an arcuate sprayer around the unified inner end of said conduit.

2. In an air purifier, a cylindrical mixing chamber, fixed bearings outside of said chamher, a shaft axially mounted in said bearings and extending axially through said chamber, a conduit having a duplex entry to said chamber on opposite sides of said shaft and unified inside of said chamber concentrically around and spaced from said shaft and an annular sprayer enveloping the inner end of said conduit.

3.. In an air purifier, a cylindrical mixing chamber, a shaft mounted axially therein, mixing devices on said shaft and a conduit having a duplex entry to said chamber and unified outside, and inside concentrically around said shaft and an annular sprayer enveloping the inner end of said conduit.

4. In an air purifier, a chamber provided with an inlet and an outlet, a liquid sprayer interiorly of said chamber near its inlet end, a screen rotatably mounted in said chamber and beyond said sprayer with reference to said inlet, a water spraying pipe extending across said chamber beyond said screen, and a bafiie'beyond said last mentioned sprayer and provided with a central opening of smaller diameter than the length of said pipe.

5. In apparatus of the character described, the combination of a mixing chamber provided with an inlet at its one end and a pair of outlets at its other end, agitating devices within said chamber, and a connection between said pair of outlets and extending across said chamber.

6. In apparatus of the character described, the combination of -a horizontally elongated mixing chamber provided with an inlet at its and discharging at a common opening intersected by said shaft, fluid spray nozzles at longitudinally spaced points within said chamber, each nozzle extending across said chamber andlast said shaft, circular screens adjustably mounted at spaced. points upon said shaft and with their annular edges nal alinementwith said chamber, each of said screens having attached thereto a. semicircular baffle plate, said baflle plates being staggered with respect to each other.

11. In an air purifier, a cylindrical mixing chamber composed of two longitudinal halves, a shaft mounted axially thereof, and a C-s'haped sprayer enveloping said shaft and attached to one half of said chamber whereby to permit of the passage of said shaft through the gap in said sprayer during the disconnecting of said sprayer-carrying half of the chamber.

Signed by me this 31st day of January,

CARL J. SCHOBRONE.

mounted at the axis ofsaid chamber, screens mounted on said shaft, means forsupplying a fluid to said chamber, an arcuate bafiie over said bottom outlet and a conduit projecting through said baflle and also through said top outlet.

8. In apparatus of the character described, the combination of a cylindrical mixing chamber disposed substantially horizontally, a shaft axially mounted in said chamber, a bifurcated conduit entering one end of said chamber on diametrically opposite sides of said shaft and discharging at a common openingintersected by said shaft, a spray nozzle within said chamber and surrounding said single discharge opening, screens mounted upon said shaft and a bafiie intermediately of the ends of said chamber and cooperating 'therewith to close a major segment ofthe circular plane which it occupies.

I 9. In apparatus of the character described, the combination of a cylindrical mixing chamber disposed substantially horizontally, a shaft axially mounted in said chamber, a bifurcated air conduit entering one end of said chamber on opposite sides of said shaft 

